Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 66, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Aug 27, 2021, 7:49 PM EDT for Lake County, Michigan. It was in force for 41 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 27, 2021, 7:49 PM EDT (23:49 UTC)
- Expired
- Aug 27, 2021, 8:30 PM EDT
- In force
- 41 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Lake County, MI
The radar
The Grand Rapids radar (KGRR), 107 km from the middle of the area, began a volume at 23:51 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 27, 8:38 PM EDT | TSTM WND GST 46 | 1 S Baldwin, MI | MESONET STATION BDWM4 BALDWIN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.8 hours before the alert went out and 204 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 733 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
031
WUUS53 KGRR 272349
SVRGRR
MIC085-280030-
/O.NEW.KGRR.SV.W.0066.210827T2349Z-210828T0030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Rapids MI
749 PM EDT Fri Aug 27 2021
The National Weather Service in Grand Rapids has issued a
* Severe Thunderstorm Warning for...
Southeastern Lake County in west central Michigan...
* Until 830 PM EDT.
* At 749 PM EDT, a severe thunderstorm was located over Baldwin,
moving east at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Chase... Idlewild...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4382 8556 4381 8589 4388 8592 4390 8556
TIME...MOT...LOC 2349Z 263DEG 16KT 4389 8583
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
THIELKE3 follow-up statements
390
WWUS53 KGRR 280003
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
803 PM EDT Fri Aug 27 2021
MIC085-280030-
/O.CON.KGRR.SV.W.0066.000000T0000Z-210828T0030Z/
Lake MI-
803 PM EDT Fri Aug 27 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR SOUTHEASTERN LAKE COUNTY...
At 803 PM EDT, a severe thunderstorm was located 6 miles southeast of
Baldwin, moving east at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Chase...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4381 8586 4388 8587 4390 8556 4382 8556
TIME...MOT...LOC 0003Z 290DEG 23KT 4386 8574
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
THIELKE512
WWUS53 KGRR 280016
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
816 PM EDT Fri Aug 27 2021
MIC085-280030-
/O.CON.KGRR.SV.W.0066.000000T0000Z-210828T0030Z/
Lake MI-
816 PM EDT Fri Aug 27 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR SOUTHEASTERN LAKE COUNTY...
At 815 PM EDT, a severe thunderstorm was located 7 miles west of Reed
City, or 9 miles east of Baldwin, moving east at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Chase...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4381 8578 4388 8579 4390 8556 4382 8556
TIME...MOT...LOC 0015Z 263DEG 16KT 4387 8566
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
THIELKE760
WWUS53 KGRR 280026
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
826 PM EDT Fri Aug 27 2021
MIC085-280035-
/O.EXP.KGRR.SV.W.0066.000000T0000Z-210828T0030Z/
Lake MI-
826 PM EDT Fri Aug 27 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LAKE COUNTY WILL
EXPIRE AT 830 PM EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However, gusty
winds and lightning are still possible with this thunderstorm.
LAT...LON 4381 8578 4388 8579 4390 8556 4382 8556
TIME...MOT...LOC 0025Z 263DEG 16KT 4388 8560
$$
THIELKEThe office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 3:22 PM EDT | Heat Advisory | GRR | Allegan, Barry, Calhoun, Clare, Clinton, Eaton and 17 more | 29 hr |
| Aug 27, 7:29 PM EDT | Special Weather Statement | GRR | Lake | 61 min |
| Aug 27, 7:36 PM EDT | Severe Thunderstorm Warning | GRR | Lake | 39 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2021Every severe thunderstorm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.